Fig. 1From: Clinical significance of precedent asymptomatic non-sustained ventricular tachycardias on subsequent ICD interventions and heart failure hospitalization in primary prevention ICD patientsKaplan–Meier analysis of appropriate ICD therapy according to the presence of precedent non-sustained ventricular tachycardia. Precedent non-sustained ventricular tachycardia (NSVT) predicted subsequent occurrences of appropriate ICD therapy (log-rank, P < 0.0001)Back to article page